Kruger Ecowatt K320 Series Operation Manual page 163

Ecowatt Drive K320 series
®
P04 group––V/F control
Function
Name
code
V/F curve setting
P04.00
of motor 1
Torque boost of
P04.01
motor 1
Torque boost
P04.02
cut-off of motor 1
Description
This group of function code defines the
V/F curve of motor 1 to meet the needs of
different loads.
0: Straight-line V/F curve, applicable to
constant torque loads
1: Multi-point V/F curve
2: Torque-down V/F curve (power of 1.3)
3: Torque-down V/F curve (power of 1.7)
4: Torque-down V/F curve (power of 2.0)
Curves 2 – 4 are applicable to the torque
loads such as fans and water pumps. You
can adjust according to the characteristics
of the loads to achieve best performance.
5: Customized V/F (V/F separation); in this
mode, V can be separated from F and F
can be adjusted through the frequency
setting channel set by P00.06 or the
voltage setting channel set by P04.27 to
change the characteristics of the curve.
Note: In the following figure, V
motor rated voltage and f
rated frequency.
Output voltage
Torque step-down V/F curve (power of 1.3)
Linear type
Torque step-down V/F curve (power of 1.7)
Torque step-down V/F curve (power of 2.0)
Square type
In order to compensate for low-frequency
torque characteristics, you can make some
boost compensation for the output voltage.
P04.01 is relative to the maximum output
voltage V .
b
P04.02 defines the percentage of cut-off
frequency of manual torque boost to the
rated motor frequency f
improve the low-frequency
characteristics of V/F.
-154-
is the
b
is the motor
b
Output frequency
. Torque boost can
b
torque
Function parameter list
Default Modify
0
◎
0.0%
○
20.0%
○